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Cisco Router unwanted dialups

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by mark russell

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Can anyone help me with the configuration of a Cisco 760 ISDN Router.

The problem is that the router keeps bringing up the isdn line for no apparent reason resulting in a horrendous phone bill for the client.

The dial ups seam to be random andI guess it is a network issue (being caused by people browsing the network through network neighborhood).

All the pc's are running a variety of Win2k Win98 and WinME can anybody suggest a starting point to try and trace the cause of the dial ups.

2 replies

by acattr

The cisco will only dialout when it is asked to route packets for interesting data.

I don't know what your configuration is, or what the cisco is being used for (to connect to internet or to another network).

If it is used to connect to the internet. Remove any internet software from the clients. Example: chat software(msn,yahoo, AIM), file sharing(kazaa,...), spyware(gator,...) Items like these constantly check for internet access.

If it is just used to connect to another private network. set static routes on the cisco that will initiate the connection. In otherword if you need to see 192.168.1.0/24, explicitly state this route, instead of using the default route. This will cause the cisco only to dial out when that network is requested.

by mark russell

Thanks for the reply,

It is used for Internet access only, do you know of a free or reasonable cost network sniffer that may isolate the problem to a particular workstation.

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